Building Zig using Cmake on Ubuntu 20.04

install-zig.sh

# The following is for ziglang commit 86dc982e74dd17633d2bdc0f5ba8e36c55f78053
# This commit required llvm15, check the cmake errors to see which 
# version of llvm you need.

# I assume you've already installed cmake git etc

# Check https://apt.llvm.org/ to see alternatives to this garbage
bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)"

# Install the dependencies not found on path
# I'm not sure if the devs are required
sudo apt-get install liblld-15 liblld-15-dev
sudo apt-get install libclang1-15-dev libclang-15-dev
sudo apt-get install libllvm15 

git clone https://github.com/ziglang/zig.git
cd zig
# find the most recent commit that passed all its tests
git checkout 86dc982e 
mkdir build
cd build
cmake .. && make

# link zig somewhere on your path I keep my local 
# executables linked to $HOME/bin
ln -s ${PWD}/stage3/bin/zig $HOME/place/on/path